Fuse puller



J. R. FOLEY FUSE PULLER April l, 1941.

v Filed Jan. 28, 1957 2 Sheets-Sheet a o P y. 1. Zig. 2.

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April 1941- OLEY FUSE PULLER Filed Jan. 28, 1937 2 Sheets-S eet 2Patented Apr. 1, 1941 UNITED ST FUSE PULLER John R. Foley, New York, N.Y., assignor to Marjore Hart, New York, N. Y.

Application January 28, 1937, Serial No. 122,832

(CI. Si -3.8)

3 Claims.

and even though the relatively movable members thereof are turnablyconnected together, the turning is accomplished without the use of anyconducting material. consequently, the improved tool can be used inproximity to high tension voltage without danger to the user or withoutliability of short circuits or the like.

Further objects and advantages of the invention will be set forth in thefollowing detail description which should be considered in connectionwith the accompanying drawings, in which Fig. 1 is a plan View of threeof the pieces or blanks employed in building up the improved fusepuller.

Fig 2 is an edge View of the pieces shown in Fig. l.

Fig. 3 is a view similar to Fig. 1 showing the .structure after amultiplicity of the blanks have been arranged in superposed relation andbe fore the parts are properly connected by a suitable cementing agent.

Fig. 4 is an edge View of one form of the complete tool.

Fig. 5 is a plan View of the same.

Figs. 6 and 7 are sectional Views taken respectively on the lines 6-6and 1-1 of Fig. 5.

Fig. 8 is a, plan View of modified blanks ernployed in building up thetool; these blanks be ing provided with holes for reinforcing plugs.

Fig. 9 is a plan View of a complete tool assembled from blanks of thetype shown in Fig 8.

Fig. 10 is a plan View of another modification of a tool similar to theone shown in Fig. 5, but with a central plug reinforcing the members ofthe tool.

Fig. 11 is a sectional View taken on the line H-H of Fig. 8.

Fig. 12 is a similar View taken on the line l2-l2 of Fig. 9.

Fig. 13 is a sectional View on the line l3-l3 of Fig. 10.

In the embodiment of the .invention illustrated in Figs. l to 7inclusive, !4 designates one of the long blanks and |5 and !6 designatea pair of the short blanks used in making the improved tool. Theseblanks are preferably formed from fiat sheet material having highdielectric strength. This material may be what is known as"Plastacelefi' which is cellulose acetate free of nitrate and camphorEach long blank has an intermediate pivotal portion l'l and oppositelyextending arms [8 and !9 whch terminate r spectively in jaws 20 and 2l.

Each short blank is provided at its inner end with a curved edge 22coniorming to a curved edge 23 of the pivotal portion of the long blank,and each short blank terminates at its outer end in a jaw 24; these jawsin the finished tool cooperating with the jaWs 2!! and 2! respectively.

After three of the blanks have been placed, as shown in Big. 1, on asuitable support, a second layer of blanks is placed on them in theorder shown ;in Fig. 3. In other words, the long blank which issuperposed on the blanks, shown in Fig. 1, is so placed that the arms!Ba and lsa are superposed on the short blanks |5 and !5 respectively,while the short blanks |5a and !ta are placed respectively on the arms I8 and e of the first long blank.

The next layer of blanks will be superposed on the first two layers inthe order shown in Fig. 1; the fourth layer in the order shown in Fig. 3and so on until the desired number of layers have been placed to form atool of the desired thickness.

While a-ssembling the blanks or even after assembling them, the arms ofthe long blanks are cemented to the short blanks by means of a suitablemedium such as acetone. The central portions Il of the blanks are notcemented together but are left free of one another so that they form apivoting means at the medial portion of the tool.

The resulting tool has sumcient rigidity to withstand the strains towhich it is subjected in use, and of course, it is an absolutenon-conductor of electrci ty, consequently, it will be safe to use andprotect the user even in an environment of electrical contamination.

Instead of cementing the arms of the long blanks to the short blanks, Imay provide the arms and short blanks with holes 25 and 26 as shown inFigs. 8 and 11, However, the holes in the inner layers of blanks Will bemade larger than the holes in the blanks of the outer layers, as shownat 21 in Fig. 12, so that the plugs 28 may pass freely through theseholes but will be wedged into the holes of the outer layers, as shown at29 in this figure. In this modification the plugs Will be formedpreferably of the same material as the blanks, and they may be Securedto the outer layers by acetone or the like.

I may also use a combination of cement and plugs in assembling theblanks. For example, as shown in Figs. 10 and 13, the arms l8b and l9bof the long bl-anks may be Secured to the short blanks Ib and lGb 'bycement and the pivotal portions l'lb of the long blanks may be pivotallyconnected by a plug 30 formed of the same material as the blanks, andSecured to the outer layers by acetone or any other suitable insulatingcement.

It will be manifest that the jaws may be arranged at only one end of thetool if d esired instead of at both ends.

The herein described and illustrated embodiments of my invention havegiven satisfactory results, and it will be obvious to those skilled inthe art, after an understanding of the invention, that other changes andmodifications may be made without departing from the spirit or scope ofthe invention, :and it is intended that all matters contained in theabove description or shown in the drawings shall be interpreted asillustrative and not in a limiting sense.

What I claim and desire to secure by Letters Patent is:

1. A fuse pulling tool or the like consisting of crossed connectedmembers turnable about an axis and forming jaws at one end of the tooland formed in its entirety of a material having high dielectricstrength, each member being formed of parallel layers of such materialand the layers consisting of long and short blanks alternately arranged.

2. A fuse pulling tool or the like consisting of crossed connectedmembers turnable about an axis and forming jaWs at one end of the tooland formed in its entirety of a material having high dielectricstrength, each member consisting of a multiplicity of parallel layers ofalternately arranged long and short blanks, and plugs connecting saidblanks, the intermediate layers having holes of larger diameter than theplugs to permit the plugs to freely pass therethrough.

3. A fu'se puller comprising layers of members having high dielectricstrength, each layer being formed of a long member and two shortmembers, each long member having .an intermediate portion with oppositecurved edges, the two short members of each layer having opposite curvedends which abut the curved edges of the long member, the long member ofone layer being secured to the short members of an adjacent layer Whilethe short members of said one layer are Secured to the long member ofsaid adjacent layer.

JOHN R. FOLEY.

